LCM for 27 and 81
"Least Common Multiple" Calculator
What's the Least Common Multiple (LCM) of 27 and 81?
(Eighty-one)
Finding LCM for 27 and 81 using GCF's of these numbers
The first method to find LCM for numbers 27 and 81 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 27 and 81 is 27, so
LCM = (27 × 81) ÷ 27
LCM = 2187 ÷ 27
LCM = 81
Finding LCM for 27 and 81 by Listing Multiples
The second method to find LCM for numbers 27 and 81 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 27: 27, 54, 81, 108, 135
Multiples of 81: 81, 162, 243, 324, 405, [...], 81
So the LCM for 27 and 81 is 81
Finding LCM for 27 and 81 by Prime Factorization
Another method to find LCM for numbers 27 and 81 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 27: 3, 3, 3 (exponent form: 33)
All Prime Factors of 81: 3, 3, 3, 3 (exponent form: 34)
34 = 81
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About "Least Common Multiple" Calculator
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers
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What's the Least Common Multiple (LCM) of 27 and 81?
See Also
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- Наименьшее общее кратное 27 и 81